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Biological Chemistry

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What is the pK of a monoprotic acid if it is known that at pH 3, 75% of the acid is in dissociation for (A)?

Formula of "Cacium Polycarbophil"

What is the formula of calcium polycarbophil? Calcium Polycarbophil is the calcium salkt of polyacrylic acid cross linked with divinyl glycol. But what is its forumla? I am looking for something in the format Ca[Ca3H4O3]n....etc. Be sure to includes a way to convey the subscript numbers.

Trematol Poisoning

Why does physical exertion increase symptoms of poisoning by trematol? Why does the pH of the blood decrease in a person who has digested trematol?

Estimating total body weight

If I had a body mass of 56 kg how would I get an estimate of my total body weight? I need a full calculation and what the method is called. Also, I have read that D2O IS used in some experiments to calculate tbw in kgs. Can you explain this process fully to me? The article I have read is 'Rapid measurement of deuterium conten

Biochemical pathways

"A branched biochemical pathway synthesizes two related essential amino acids D and F. A mutant defective for enzyme 2 will grow on minimal medium supplemented with which compounds?" The picture drawn with this problem looks something like this (I'll also attach a Word file in case this is unclear: 1

Use of colchicine

In a normal diploid cell, polyploidy can be induced by treatment with colchicine. The drug must exert its effect during which phase of the cell growth or division?

Tetrazolium test for determining viability of seeds

The performance of a seed can be determined by studying its germination and viability potential. One of the most significant advances in seed testing technology in recent years is the topographical tetrazolium method.

Question about Cell signaling

CA2+, IP3, and cAMP have all been described as second messengers. In what ways are their mechanisms of action similar? In what ways are they different? If you were comparing the molecular structure of kinesin and dynein, which part (heads or tails) would you expect to be most similar between them? Why?

An explanation of NAD and FAD

Please help answer the following questions. Provide at least 300 words in the solution. What are NAD and FAD? How do their roles differ? Which is found in greater amounts?